A small soft lump on the anal opening after fire is most often seen in hemorrhoids, which can be solved by general treatment or surgical treatment. Hemorrhoids are one of the most common anorectal diseases, the cause of which is unclear, but drinking alcohol and irritating foods can trigger hemorrhoids. Hemorrhoids are classified into three categories: internal, external and mixed hemorrhoids. Internal hemorrhoids are characterized by bleeding, external hemorrhoids are characterized by pain, and mixed hemorrhoids are a combination of internal and external hemorrhoids, which can be present at the same time. The triggering of hemorrhoids is related to poor living and dietary habits, such as irregular sleep, late-night exertion, spicy and stimulating food intake, alcoholism, long-term dry stools, constipation and so on, will induce hemorrhoids, aggravate the discomfort symptoms. The treatment of hemorrhoids is based on general treatment, that is to say, changing dietary habits and bowel habits, strictly abstaining from smoking and alcohol, warm water sitz bath or local hot compresses. You can also use surgical treatment, including hemorrhoidal simple excision, anastomosis hemorrhoidal mucosal ring stapling, thrombosed hemorrhoidal stripping surgery. If the phenomenon of small pimples in the anus, it is recommended to go to the hospital for examination, to exclude other diseases, simply hemorrhoids need to give the appropriate guidance for treatment and prevention, to avoid aggravation of the condition, affecting the normal life and work.